1: having a spiritual meaning or reality that is neither apparent to the senses nor obvious to the intelligence
2: involving or having the nature of an individual's direct subjective communion with God or ultimate reality

1: the mystical food of the sacrament
2. the mystical experience of the Inner Light

used when describing something magical and amazing often confused with mystic falls but it is not mystic falls. it describes something in the imagination or something real but beautiful and undescribible. it is a word of beauty.